Alert archive / Alabama / Severe Thunderstorm Watches in 2008
Severe Thunderstorm Watch 73
The Storm Prediction Center issued this severe thunderstorm watch at Feb 22, 2008, 1:44 AM CST for 23 counties in Alabama; 18 counties in Mississippi. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 22, 2008, 1:44 AM CST (07:44 UTC)
- Expired
- Feb 22, 2008, 7:00 AM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 41 counties
Autauga County, AL, Bibb County, AL, Chambers County, AL, Chilton County, AL, Choctaw County, AL, Clay County, AL, Cleburne County, AL, Coosa County, AL, Dallas County, AL, Elmore County, AL, Greene County, AL, Hale County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Marengo County, AL, Montgomery County, AL, Perry County, AL, Randolph County, AL, Shelby County, AL, Sumter County, AL, Talladega County, AL, Tallapoosa County, AL, Clarke County, MS, Copiah County, MS, Covington County, MS, Franklin County, MS, Jasper County, MS, Jefferson Davis County, MS, Jones County, MS, Kemper County, MS, Lauderdale County, MS, Lawrence County, MS, Lincoln County, MS, Neshoba County, MS, Newton County, MS, Rankin County, MS, Scott County, MS, Simpson County, MS, Smith County, MS, Wayne County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 126 km from the middle of the area, began a volume at 07:44 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 10%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 50%
Warnings issued inside it
3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 22, 2:11 AM CST | Severe Thunderstorm Warning | BMX | Chambers, Coosa, Elmore, Tallapoosa | 34 min |
| Feb 22, 2:28 AM CST | Flash Flood Warning | JAN | Franklin, Lawrence, Lincoln | 3 hr |
| Feb 22, 3:32 AM CST | Flash Flood Warning | BMX | Greene, Pickens, Sumter | 3 hr |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Jackson, MS (KJAN), launched 00:00Z, 7.7 hours before the alert went out and 134 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 2 J/kg
- Mixed-layer CIN
- -349 J/kg
- Mixed-layer LCL
- 562 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 21, 6:53 PM CST | Severe Thunderstorm Watch | SPC | Choctaw, Clarke, Greene, Marengo, Sumter, Washington | 7 hr |
| Feb 22, 1:05 AM CST | Mesoscale Discussion | SPC | Autauga, Bibb, Chilton, Clay, Coosa, Greene and 8 more | 55 min |
| Feb 22, 4:41 AM CST | Mesoscale Discussion | SPC | Autauga, Chilton, Choctaw, Clarke, Dallas, Marengo and 2 more | 64 min |
| Feb 21, 7:22 PM CST | Mesoscale Discussion | SPC | Hancock, Harrison, Jackson, Pearl River, Stone, Wilkinson | 83 min |
| Feb 21, 8:54 PM CST | Tornado Watch | SPC | Amite, Forrest, Greene, Lamar, Marion, Perry and 3 more | 7 hr |
| Feb 21, 10:31 PM CST | Mesoscale Discussion | SPC | Hancock, Harrison, Jackson, Pearl River, Stone, Wilkinson | 119 min |
| Feb 21, 10:59 PM CST | Mesoscale Discussion | SPC | Hancock, Harrison, Jackson, Pearl River, Stone, Wilkinson | 2 hr |
Nearby
Severe Thunderstorm Watches in Alabama, 2008Severe Thunderstorm Watches in Mississippi, 2008Every severe thunderstorm watch in 2008
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.